The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2011
Filed:
Jul. 09, 2007
Peter Hirth, Rösrath, DE;
Rolf Brück, Bergisch Gladbach, DE;
Thomas Härig, Neunkirchen-Seeschied, DE;
Peter Hirth, Rösrath, DE;
Rolf Brück, Bergisch Gladbach, DE;
Thomas Härig, Neunkirchen-Seeschied, DE;
Emitec Gesellschaft fuer Emissionstechnologie mbH, Lohmar, DE;
Toyota Motor Corporation, Aichi, JP;
Abstract
A method for removing particulates from a gas stream includes providing a gas-permeable filter layer having subregions with a parameter of differing magnitudes in the direction of the layer thickness. This parameter relates at least to the porosity, the fiber diameter of fibers or the fiber type content of the filter layer. The gas stream is divided into partial gas streams which are each passed through different subregions of the filter layer. Fiber layers, particulate filters, exhaust systems and vehicles based on this method are also provided.